63323: Acronis Backup: Backup fails with "The snapshot creation has failed due to a hardware issue or a conflict with your disk hardware. Windows has reported the following error: The device has a bad block"

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Symptoms

Backup fails with the following error:

The snapshot creation has failed due to a hardware issue or a conflict with your disk hardware. Windows has reported the following error: 'The device, \Device\X, has a bad block.'.

Cause

The most common reason is a physical error on the hard drive that you attempt to back up.

Another possible reason is high workload on the backed up drives at backup time.

Solution

1) Reschedule backup to a time when the I/O load is lower.

2) If backup still fails when workload is low, most likely cause of the issue is a physical error on the hard drive. Find the faulty disk using Windows Event Viewer and Acronis Disk Report (or a different utility for checking hard disk for errors).

  • Review Windows event logs, see details in this article.
  • Review Acronis Disk Report, as described below.
  1. Download and run the Acronis Report tool as Administrator (click here to download). See Acronis Disk Report for more information about the tool;
  2. Check if there are errors shown in the generated report.txt

    The C column stands for Full partition check status:

    C - means there are no errors
    E - means that an error was found
    W - means a warning

If Acronis Report shows E or W for the drive that you are trying to backup, or Windows Event logs show errors related to a certain disk/partition, then it is recommended to check the partition for errors and repair. You can Windows native Check Disk utility or diagnostic tools provided by your hardware manufacturer.

3) If errors and bad blocks remain after fixing the disk with Check Disk or hardware manufacturer's tools, consider replacing the faulty hardware.

If the disk shows no errors but the issue persist, please create a system report (see Acronis Backup Cloud: Collecting System Report, Acronis Backup 12.5 and 12: Collecting System Information) of the affected machine and contact Acronis Customer Central with a reference to this article. 

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